HRX-OM-M090
Chapter 7 Control, Inspection and Cleaning
HRS Series 7.3 Consumables
7-5
7.2.5 Inspection for winter season
Prevention of freezing of circulating fluid
The product can prevent freezing of the circulating fluid during winter or at night.
If there is a risk of freezing due to a change of installation conditions and operating
environment (operating time, weather etc.), conduct the following operations in
advance.
Anti-freezing function (automatic pump operating function)
z
When the circulating fluid temperature reaches 3
o
C, the pump will start
automatically.
z
The operation of pump will heat the circulating fluid with its power.
Then, when the circulating fluid temperature reaches 5
o
C, the pump will
stop automatically.
z
As a result, the circulating fuid temperature is kept between 3 and 5
o
C, and
can be prevented from freezing.
z
The operation cannot prevent freezing of the facility water circuit (For water
cooled type). The user should take measures against freezing.
z
This function does not prevent the freezing of the automatic fluid filling circuit
(when the option is selected). The measure for the automatic fluid filling
circuit is taken by customer.
∗For details refer to “5.10
Anti-freezing function”.
1. Keep the power supply on. (RUN lamp flashes at 2sec. intervals.)
2. Fully open the valve and manual relief valve installed by the user, to ensure the
circulating fluid will be able to circulate when the pump starts automatically.
7.3 Consumables
Replace the following parts depending on their condition.
Table 7-3 Consumables
Part number Name Qty. Remarks
HRS-S0001 Dustproof filter 1 For spare
HRG-S0211 Mechanical seal set 1 For option T (High head pump)
This function cannot prevent freezing of the product completely if the
installation area is exposed to severe cold weather conditions.
In such conditions, consult with a specialized vendor to install
other anti-freezing equipment (commercial tape heater, etc.).
Also, the facility water circuit does not have a similar function.
Also, the automatic water-fill does not have a similar function.
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